1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _ASM_E820_API_H
3 #define _ASM_E820_API_H
4
5 #include <asm/e820/types.h>
6
7 extern struct e820_table *e820_table;
8 extern struct e820_table *e820_table_kexec;
9 extern struct e820_table *e820_table_firmware;
10
11 extern unsigned long pci_mem_start;
12
13 extern bool e820__mapped_raw_any(u64 start, u64 end, enum e820_type type);
14 extern bool e820__mapped_any(u64 start, u64 end, enum e820_type type);
15 extern bool e820__mapped_all(u64 start, u64 end, enum e820_type type);
16
17 extern void e820__range_add (u64 start, u64 size, enum e820_type type);
18 extern u64 e820__range_update(u64 start, u64 size, enum e820_type old_type, enum e820_type new_type);
19 extern u64 e820__range_remove(u64 start, u64 size, enum e820_type old_type, bool check_type);
20 extern u64 e820__range_update_table(struct e820_table *t, u64 start, u64 size, enum e820_type old_type, enum e820_type new_type);
21
22 extern void e820__print_table(char *who);
23 extern int e820__update_table(struct e820_table *table);
24 extern void e820__update_table_print(void);
25
26 extern unsigned long e820__end_of_ram_pfn(void);
27 extern unsigned long e820__end_of_low_ram_pfn(void);
28
29 extern u64 e820__memblock_alloc_reserved(u64 size, u64 align);
30 extern void e820__memblock_setup(void);
31
32 extern void e820__reserve_setup_data(void);
33 extern void e820__finish_early_params(void);
34 extern void e820__reserve_resources(void);
35 extern void e820__reserve_resources_late(void);
36
37 extern void e820__memory_setup(void);
38 extern void e820__memory_setup_extended(u64 phys_addr, u32 data_len);
39 extern char *e820__memory_setup_default(void);
40 extern void e820__setup_pci_gap(void);
41
42 extern void e820__reallocate_tables(void);
43 extern void e820__register_nosave_regions(unsigned long limit_pfn);
44
45 extern int e820__get_entry_type(u64 start, u64 end);
46
47 /*
48 * Returns true iff the specified range [start,end) is completely contained inside
49 * the ISA region.
50 */
51 static inline bool is_ISA_range(u64 start, u64 end)
52 {
53 return start >= ISA_START_ADDRESS && end <= ISA_END_ADDRESS;
54 }
55
56 #endif /* _ASM_E820_API_H */
57
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